<!DOCTYPE HTML>
<html>
<!--
https://bugzilla.mozilla.org/1281963
-->
<head>
  <meta http-equiv="content-type" content="text/html; charset=utf-8">
  <title>Test for Bug 1281963</title>
  <script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
  <script type="text/javascript" src="/tests/SimpleTest/SpawnTask.js"></script>
  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
</head>
<body>
<p id="display"></p>
<div id="content"></div>

<script class="testbody" type="application/javascript;version=1.7">

// __setPref(key, value)__.
// Set a pref value asynchronously, returning a promise that resolves
// when it succeeds.
let setPref = function* (key, value) {
  return new Promise(function(resolve, reject) {
    SpecialPowers.pushPrefEnv({"set": [[key, value]]}, resolve);
  });
};

// Run a test to see that we don't expose the supported mimeTypes
// or installed plugins when "privacy.resistFingerprinting" is active.
add_task(function* () {
  let exampleMimeType = undefined,
      examplePlugin = undefined;
  // Disable fingerprinting resistance.
  yield setPref("privacy.resistFingerprinting", false);
  // Depending on the testing platform, we may have at least
  // one mimeType and plugin available.
  exampleMimeType = navigator.mimeTypes[0];
  examplePlugin = navigator.plugins[0];

  // First check that we can retrieve mimeType or plugin by name and that
  // the array length is nonzero.
  if (exampleMimeType) {
    isnot(navigator.mimeTypes[exampleMimeType.type], undefined, "Should reveal mime type");
    isnot(navigator.mimeTypes.length, 0, "navigator.mimeTypes.length should be nonzero");
  }
  if (examplePlugin) {
    isnot(navigator.plugins[examplePlugin.name], undefined, "Should reveal plugin");
    isnot(navigator.plugins.length, 0, "navigator.plugins.length should be nonzero");
  }

  // Now test with fingerprinting resistance enabled
  yield setPref("privacy.resistFingerprinting", true);
  if (exampleMimeType) {
    is(navigator.mimeTypes[exampleMimeType.type], undefined, "Don't reveal mime type");
  }
  is(navigator.mimeTypes[0], undefined, "Don't reveal mime type");
  is(navigator.mimeTypes.length, 0, "navigator.mimeTypes.length should be 0");
  if (examplePlugin) {
    is(navigator.plugins[examplePlugin.name], undefined, "Don't reveal plugin");
  }
  is(navigator.plugins[0], undefined, "Don't reveal plugin");
  is(navigator.plugins.length, 0, "navigator.plugins.length should be 0");
});

</script>

</body>
</html>
